Table 1.

Patients' time on treatment

	Arm A (118)	Arm B (174)	Arm C (164)
On treatment >12 months	22 (19%)	31 (18%)	42 (26%)
On treatment >18 months	6 (5%)	13 (7%)	18 (11%)
On treatment >24 months	3 (3%)	4 (2%)	5 (3%)
On treatment >48 months	0	0	1 (<1%)
Median time on treatment	8.2 months	8.2 months	7.6 months
Maximum time on treatment	3.0 years	3.3 years	5.4 years